Indicator



May 15, 1923.

A. SUNDH ET AL INDICATOR Filed Oct. 8, 1920 3 Sheets-Sheet 1 ATTORNEYSMay 15 A. SUNDH ET AL INDICATOR 3 Sheets-Sheet 2 Filed Oct. 8, 1920munmm May. 15, 1923.

AV SUNDH ET AL INDICATOR ATTGRNLEY Patented May 15, 1221" s1" aresAUGUST SUNDH, or nasrmes uron-nunson, NEW YORK, AND WILLIAM wns'rnn-MAN, or DETROIT, MICHIGAN.

mmcaron.

Application filed October 8, 1920. Serial No. 415,514.

To all whom c'ztmag concern:

Be it known that we, AUGUST SUNDH, a citizen of the United States, and aresident of Hastings upon-Hudson, county of Westchester, and State ofNew York, and WIL- LIAM WESTERMAN, a citizen of the United States, and aresident'of Detroit,-c'ou'nty of Wayne, and State of Michigan, have in--vented certain new and useful Improvements 1 in Indicators, of which thefollowing is a specification. I 1

This invention relates to a device adapted to be applied to'a millormills for indicating the travel of a moving part thereof as well asfor indicating the amount of material operated upon by the mill.

Briefly the present apparatus comprises a mill connected by a flexiblecoupling to an electric motor whereby the mill is driven,

the lost motion in the coupling being employed for the closing of a palrof contacts controlling the circuit to an electrlc clutch, the latterbeing connected to an indicator for indicating the amount of materialbeing passed through the mill. The indicator for indicating the travelof the mill roll or other moving part of the mill is coupled mechanically to the mill and in addit1on an electric winding is employedfor insuring that there will be no slippage of thiscoupling.

In the accompanying drawlngs wherein an embodiment of this invention hasbeen illustrated,

Figure 1 illustrates the apparatus in end elevation;

Fig. 2 is aplan view of the same; Fig. 3 is an enlarged, detailed viewof the indicating devices; Fig. 4: is a section taken substantially onthe line 44 of Fig. 3;

Fig. 5 is asection on the line 55 of Flg. 3; and Fig. 6 is a wiringdiagram. Referring to the drawings in detail, 1

and 2 designate respectively, the upper and lower rolls of a rollingmill, these rolls being suitably supported in the usual manner in frames3 and 4. The rolling mill is driven by an electric motor 5. The armatureshaft of this motor carries a spur gear 6 meshing with a large spur gear7 mounted upon a shaft 8 having bearings at 9 and 10. The shaft Sis inalignment with a shaft 11 carried by and rigidly secured to the lower'vided with a winding 17 which roll 2 of the rolling mill, this shafthaving a bearing at 12. The shafts 11 and 8 are connected to eachother'by a yieldingor flexible coupling 13 comprising the two parts'14and 15. By reason of the fact that the coupling 13 is a yielding orflexible one, the parts 14 and 15 are designed to have a slight rotativemovement relative to eachother. 'ThiS fact is taken advantage of forcontrolling a circuit in a manner hereinafter to be pointed out indetail. Mounted immediately above the upper roll 1 of the rolling millis a magnetizable, rotatable coupling member 16 shown in detail in Figs.3 and 4. This member is so mounted relatively to the roll 1 as to'beengaged thereby and is prowhen energized will magnetize the member 16 tocause the same to adhere to the roll 1 so that when the device is inoperation no slippage will occur between the roll 1 and themember 16.Mounted on the shaft 18 of the coupling member 16 is a gear 19, thisgear meshing with a gear 20 carried by a stub shaft 21, thelattercarrying a bevelled gear 22. The gear 22 meshes with a bevelled gear 23carried by a shaft 24 on the extreme left-hand end of which is mountedaspurgear 25. meshing with a spur gear 26 carried at the end of the shaftof the indicating element 27, this indicating element being designed toregister or indicate the travel of the mill roll 1 regardless of whethermaterial is passing through the mill or not. The shaft 24 carry ing thegear 23 carries also a spur g ear 28 meshing with a spur gear 29 mountedupon a shaft 30 carrying one part 31 of an electric clutch 32, the othermember 33 of said clutch being mounted upon a shaft 3a carrying a gear35 meshing with a spur gear 36 on the end of the operating or drivingshaft of the indicating element 37 which isdesigned for indicating theamount of material passed through the rolling mill.

The entire mechanism shown in Figs. 3 and a is mounted within a casing38 which is I yieldingly secured to the frame 4 of the rolling mill andis maintained in position to cause the coupling member 16 to be inengagement with the roll 1 at all times by means of a spring 39. Thisyielding mounting is provided so that the device as a whole willaccommodate itself to varying thicknesses of stripspassed through therolling mill.

The. clutch 3g heretofore. referred to, and which E joinpi ise's themember's 31anfd. '32

has a Winding 40 Within the member 31,

Winding receiving current from a source i cmtete nd; thet hy-drir thendic tor,

The. member. 16 comprises contact strips 46 and 4Z a dapted. to berotated; when the member is rotating these contact stripscooperatingwith stationary contacts 48 and 4%xrespectively, which areconnected to a common source of electrical supply.

The coupling 13 which. has already been and; having. a slight-. rotativemovement relative to each other, carries contactgmechanism'w comprisinga contact 1 and a contest 2, he! form r e ng arried by the member, hilethe latter is carried; by; the member. 15,

5.; be fmoved; toward 1 the observer it will causeg'the contact'52 toengage the contact ng -e s 5% WWW, are mounted to ro a. QnWiththe sha 8.

ope i ti n he Circuit for the ma 'be closed y fleeing the Switch he.circui m y e trawl the mm ew frqn rqne ide t he ine thr ug t e me e qnfluctor 8 es st n e 9,. switch 6Q conductor Q1, switch. 55,t,othe.otherside ofthehne. At this same time, a, circuit is. closedjto the windingof the element 16, this .c'rcuit being, as follows; From. one side ofthelinelthrlough thesivitch 55 conductors 56; 61x62, Winding 17, conductors63 64, 6 5] to theother side oi the line. The inding 1,7. of the,element 1Q HOW, being. 61161? gized and t e, element 16 being v incontact.

with the roll offthe.rollingi'milhthe indi-' cating element 27;iorindicating the travel I of'the jmill iioll 1" W ill beca,used tofunction through the gear train already described;

'; A;t this time, hovreverQduef to the tact. that e Qll amilL- e dling.he idiee or 37 will not be,fungtioning, the clutch 22, conr i a t emenot yet ay n e r' iil- As-soon asi st p a e e e qllina milljtheextraload, placed on the mill will! j $1M t go he haft. n c ed t themillroll. 2.so that the element, of the coupling 13 will. be rotatedslightly rela- Q ,tive to the member 14 to cause the contact seen-thatif the mem qta i mde he qpelt t on. otthe moto 51}. These contacts. areconnected; to slip 2'. w bemoved, i eas eemee w th the enteq .4 Th -cl ts. Co ta 52 upon the contact 51 Will close a circuit to th w ndi g 4Q, ot e ut h member. 32 which themmay be traced as follows: From one -si'tleof the line through the switch 55, conductors 56, 61. and 66, contacts"52 and 51, resistance 67, conductor 68, Winding. 4Q of; clutch 32,conductors 64 and 65 and switch 55 to the other side of the line. Thewinding 40 now being energized, the, clutch member 33; will; bedrawninto engagement with, the clutch member 31aso that {the indicating.element 3.7; Willnoiv, be

drive o register.or-indicate the. amount.

of material passed through the mill. As soon, as, a strip, has passedthroughgthemi-ll; it will. be. obvious. tha he con acts 2- and 51 will:be. automatically. separated to} open. the. circuit oiqthe winding 0:5.the/clutch 32 whereby the indicating element 3'E'wi1l; ceasefunctioning. In the meantime, lLOW- ever,- the. indicator. 27; willcontinue, to functionandwillso continue until; the switch 55, is, openedto, openilie motor circuit to bring the rolling milllto rest.

It, will be seen; from the foregoing that means have been p'roizidedifor indicating he. mov nt f moving pattof a; mills.

ndua so. 1 ndi ati g. he amo n f.

terial passed through, the mill.

It Will besee'n. furthermore that means:

have been provided whereby circuit toi electric clutch controlling, theindicatorv for 1 indicating; the amount otmaterial; passed through, themill. is automatically controlled bythe material passed throughjthe millh unt a rip i Pa sed nt thanii1 ihe. circuit to the electricclutchmQIltiOnedis maintained; open, 1 It Will be obvious from theforegoingthat if desired several, mills may be. driven Qfrom e e m tor,each.'m11ljbein2- pmv deili.

With its own indicatinn arrangement; It will, be seen furthermore thatthe connection between the indicator for incheating the travel of amoving,-

oi the m ill and the motor. for causingthe former, to function ismechanical 5, the. connection; ;between the driving. motor and theindicator for indicating the amount ofmateriali passedv throughthemill'is ingfpart electrical;

It Will be obvious furthermore that-by,

providing the windinggh'? for. the, element 16, that is to sayv therollfwhich rests-upon the, mill; roll l. no slippage Wlll OC QllI,,be.-, tween the member. 16 and the roll 1 so that,

travel; of the. mill,

obviously hine'e m ye. made. in. th 1 a -1 mhine ieni a-milli diqa oaforu.

indicatingor registering theiamount ofi ma the n ie t lllu'ee ten accurasln the;

terial passed through said mill, a motor for driving said mill andindicator, a clutch for connecting the indicator to the mill and aflexible coupling connecting said motor and said mill, said couplingcontrolling the op eration of said clutch.

2. In combination, a mill, an indicator, a motor for driving said milland indicator, an electric clutch for connecting the indicator to themill, and a flexible coupling for connecting the mill to the motor andprovided with contact mechanism for controlling the circuit of saidelectric clutch.

3. In combination, a mill, an indicator for indicating the amount ofmaterial passed through the mill, a motor for driving the mill, aflexible coupling for connecting the motor to the mill, an indicator andactuating connections between the indicator and mill including anelectric clutch and means whereby the flexible coupling controls thecircuit of said electric clutch.

4. In combination, a mill, an indicator for indicating the travel of amoving part of said mill, an indicator for indicating the amount ofmaterial passed through said mill, a motor for driving the mill and saidindicators, and a flexible coupling between the motor and saidindicators, said coupling being adapted to control the operation of saidlast-named indicator.

5. In combination, a mill, an indicator for indicating the travel of amoving part thereof, an indicator for indicating the amount of materialpassed through said mill, a inotor for driving said mill and indicators,an electric clutch for connecting one of said indicators to the mill, aflexible coupling between said motor and mill and contact mechanismcarried by said coupling for controlling said electric clutch.

6. In combination, a mill, an indicator for indicating the amount ofmaterial passed through said mill, a motor for driving said mill andindicator, a flexible coupling between said motor and said mill,.anelectric clutch for connecting the mill to the indicator and contactmechanism carried by said coupling and adapted to close the circuit ofsaid electric clutch when a load is placed upon the flexible coupling bymaterial being passed through the mill in the operation of the mill.

7 In combination, a rolling mill, a shaft connected to a roll thereof, amotor, a shaft driven thereby, a flexible coupling for connecting saidshafts to each other, an indicator for indicating the amount of materialpassed between the rolls of said mill, an electric circuit forcontrolling said indicator and contact mechanism carried by saidflexible coupling for closing said circuit when a strip is passedthrough the mill to cause said indicator to function.

8. In combination, a rolling mill, a magnetizable roller engaging oneroll of said mill, an indicator driven by said magnetizable roller forindicating the amount of material passed through said mill, an electricclutch for establishing a driving connection between said roller andindicator, an electric circuit for said clutch, a motor for driving themill to thereby drive said indicator and a yielding coupling betweensaid motor and mill provided with contact mechanism for controlling saidcircuit when a strip is passed into the mill to cause said indicator tofunction.

9. In combination, a rolling mill, a motor for driving the same, aflexible coupling between said motor and mill, an indicator adapted-tobe driven by said mill for inclicating the amount of material passedthrough the mill, an electric clutch for controlling the operation ofsaid indicator, an electric circuit for said clutch, and contactmechanism carried by said flexible coupling and adapted to be actuatedto closed position by entrance of material to said mill, said contactmechanism controlling said circuit for said electric clutch.

This specification signed this 23rd day of Sept, 1920.

. AUGUST SUNDI-I. This specification signed this 27th day of Sept, 1920.

WM. W ESTERMAN.

